Keyphrases
- approximation algorithms
- np hard
- special case
- worst case
- vertex cover
- minimum cost
- facility location problem
- set cover
- approximation ratio
- exact algorithms
- network design problem
- randomized algorithms
- open shop
- np hardness
- constant factor
- primal dual
- approximation schemes
- disjoint paths
- constant factor approximation
- precedence constraints
- undirected graph
- combinatorial auctions
- convex optimization
- greedy algorithm
- computational complexity